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#ifndef DORIS_BE_SRC_QUERY_CODEGEN_SUBEXPR_ELIMINATION_H
#define DORIS_BE_SRC_QUERY_CODEGEN_SUBEXPR_ELIMINATION_H

#include "common/status.h"
#include "codegen/llvm_codegen.h"

namespace doris {

// Optimization pass to remove redundant exprs.
// TODO: make this into a llvm function pass (i.e. implement FunctionPass interface).
class SubExprElimination {
public:
    SubExprElimination(LlvmCodeGen* codegen);
    ~SubExprElimination() { }

    // Perform subexpr elimination on function.
    bool run(llvm::Function* function);

private:
    // Parent codegen object.
    LlvmCodeGen* _codegen;
};

}

#endif

